Adjustable window-screen.



E. T. LARK ADJUSTABLE WINDOW SCREEN. APPLICATION FILED :uuszs. sen.

1,268,329., Patented Apr. 16,1918.

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A Ham/Er EVERARD T. LARK, OF NEW HANOVER, ILLINOIS.

ADJUSTABLE WINDOW-SGREEN.

Specification of Letters Patent.

Patented Apr. 16, 1918.

I Application filed June 25, 1917. Serial No. 176,680.

To all whom it may concern:

Be it known that I, Evnnano T. LARK, a citizen of the United States, residing at New Hanover, in the county of Monroe and State of Illinois, have invented certain new and useful Improvements in Adjustable )Vindow-Screens, of which the following is a specification.

This invention is an adjustable screen for windows or similar places.

In the accompanying drawings forming part of this specification and in which like numbers of reference denote like parts wherever they occur,

Figure 1 is a front or outside elevation of a window-frame containing in position one of these adjustable screens;

Fig. 2 is a perspective view of a slidemember in which such screen is adapted to slide;

Fig. 3 is an inside elevation of the adjustable screen;

Fig. 4 is a sectional view, on the line 4-4 in Fig. 3;

Fig. is a top plan view showing the adjustable screen in position in a windowframe;

Fig. 6 is a sectional view on the line 66 in Fig. 3;

Fig. 7 is a sectional view on the line 77 in Fig. 3;

Fig. 8 is a sectional view on the line 88 in Fig. 3;

Fig. 9 is a detailed view of a winding and locking wrench; and

Fig. 10 is a detailed View of a pawl-andratchet lock to be used to perform the looking function of the said wrench.

The window-frame 1 and sash 2 may be of any ordinary or desired construction, and the use of this adjustable screen is not confined to windows having sash or to windows of any kind, but it may be .used in any suitable location.

The screen wire 3 is fastened at its ends (or sides) to posts 4, having angular heads 5 adapted to be rotated by the wrench 6, having the angular hole 7.

By rotating the posts 4, the screen wire 3 is rolled up on the same, as shown in Fig. 4, to any desired degree to shorten the same to fit the narrower dimensions of any window or other space, or by rotating the posts 4 in the opposite direction such wire will be uncoiled to enable the screen to fit a wider window. While such coiling or uncoiling is taking place, the telescoping members 8 and 9 of the upper and lower parts of the screen-frame slide relatively to each other, the screws 10 having first been unloosened to allow the said parts to move. The inner end of each screw 10 slides in the slot 11 in the adjacent frame part 8.

To prevent sagging of the inner part 8 relative to the inclosing or outer part 9 of the upper frame-member or similar displacement of the said parts relative to each other in the lower frame part, which sagging or displacement might be caused by the pulling or strain upon the wire 3 or other reason, a clip 12 encircles the joint between the same, as shown in Figs. 7 and 3, and prevents such lateral movement.

When the wire 3 has been wound or unwound upon a post 4 to the desired extent, the wrench 6, with which such post 4 has been rotated for that purpose, is not removed from the head 5, but is allowed to be depressed thereon until its shank rests upon the top of the upper screen framemember (as shown in Fig. 3), which position causes it to be held between the edges 13 v of the side frame-members 14, thereby acting as a look from unwinding or unloosening of the wire 3, the angular hole 7 of the wrench 6 still holding the angular head 5 of the post 4.

Instead of such use of the wrench 6, a pawl-and-ratchet lock 15, such as illustrated in Fig. 10, may be provided at a point adjacent to where the clip 12 is shown in the drawings.

It may be found unnecessary to provide two winding posts 4, and one of the same at either end or side of the screen may be found adequate.

A slide-way for the side frame-members 14 is preferably provided in the windowframe 1, consisting of a metal piece 16 having on its inside a concaved groove for the said s1ide-way, the edges 17 of which are located at a point far enough out on the sides of the cylindrical columns 14 to afford a secure bearing and sliding surface therefor. The members 16 may be secured in the sides of the window-frame 1 by screws 18 or any other suitable means, and may (as shown in Fig. 1) extend higher up on one side than on the other, in order to increase the facility for removal of the screen.

The columns 14: are hollow and form receiving receptacles or chambers for the posts l and any wire that may be wound thereon, and are rigidly attached, respectively, to the slidable frameanenibers Sand 9. The ends of the said chamber are closed, as shown by the dotted lines in Fig. 3.

The members 8 and 9 so formed as to have an internal groove or trough 19 into which the wire 3 is inserted and thereby held without the use of tacks, brads, screws, or the like, so as to be readily slidable therein when wound on a post l, as hereinbeiore described.

Having thus described this invention, I hereby reserve the benefit of all changes in form, arrangement, order, or use of parts, as it is evident that many minor changes may be made therein without departing from the spirit of this invention.

I claim:

1. The combination of a pair of telescoping sliding members comprising a frame, each having within it a groove, a pair of hollow members respectively attached fixedly to the said telescoping members, a

winding post in at least one of the said hollow members, screen material adapted to be wound upon the said post, and a slideway for the frame.

2. An adjustable window screen comprising a pair of hollow side members, winding posts located within the same, screen material adapted to be wound upon the said posts, means for rotating and locking the said posts, adjustable frame members intermediate the said posts having a groove therein for the reception of the screen material edges, a slot in one of the said members, and a bolt adaptedto slide in the said slot and to clamp the said members together.

3. An adjust-able window screen comprising a pair of hollow side members, Winding posts located within the same, screen material adapted to be wound upon the said posts, means for rotating and locking the said posts, adjustable frame members intermediate the said posts having a groove therein for the reception of the screen material edges, a slot in one of the said members, a bolt adapted to slide in the said slot and to clamp the said members together, and a clip for holding the said members in alinement at a point removed from the said bolt.

at. A hollow member constituting part of a screen frame, a rotatable member within the same, there being space around the same and within. the said hollow member forming a chamber for the reception of surplus screen material, extensible and reducible framemembers extending from the said hollow member and connected by an additional member, screen material located between all of the said frame members, means for rotating the said rotatable member in either direction, and a lock adapted to prevent rotation of the said rotatable n'iember.

5. An adjustable screen having a frame and screen material, the said frame comprising a pair of members adapted to be lengthened and shortened, tubular side members adapted to receive or release surplus screen material, means for winding the said screen material within the tubular members and concave guide members in which said tubular side men'ibers are adapted to slide.

In testimony whereof I hereunto aflix my signature.

EVERARD T. LARK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, 20.0. 

